The fiber collimators series 60FC are designed for collimating radiation exiting optical fiber cables with high pointing stability. They can also be used in reverse-mode as fiber incouplers. They are suitable for single-mode and polarization-maintaining fiber cables leading to collimated beams with a Gaussian intensity profile. Please note that for multimode collimation the intensity profile is not Gaussian and depends on specific fiber and radiation properties.
An optics for each application
A large variety of collimating optics allows that the optimum focal length and the best lens type for a single wavelength (asphere, monochromat) or a wavelength range (achromat or apochromat) can be selected for each application. All lenses are AR-coated. For an ideal Gaussian beam and standard fibers you can reach coupling efficiencies up to 80%.
Adjustment of focus
The distance between fiber end-face and collimating optics is adjusted by means of an eccentric key. The lens does not rotate when adjusting the focus. The final focus setting is locked by means of two radially arranged clamping screws. Additionally attachment optics can be mounted to the front of the collimator.
Optimum lens performance
The angled polish of connectors of type APC is considered by a pre-angled mechanical coupling axis that compensates the beam deflection and you can use the lens centrically. This minimizes aberrations simply resulting from a non-ideal beam path through the lens.
Receptacle Type Mini AVIM ®
The fiber coupler has a receptacle of type Mini AVIM ® and is available as PC (for fibers with 0°-polish) and APC (for fibers with 8°-polish). The receptacle type Mini AVIM ® is compatible with fiber connectors type Mini AVIM ® and Midi AVIM ®. Compatible fiber cables can be found on www.diamond-fo.com.
The fiber collimators are available in amagnetic titanium. The linear coefficient of thermal expansion is close to that of the optics so that a thermal stability over a larger temperature range can be expected. The collimators are vacuum-compatible.
The collimator can be placed into a standard mirror mount using the corresponding adapters.
Fields of application: Avionics and space as well as ultra-compact and stable instruments.
An exemplary coupler can be found here.